Bash script that generates a random MAC address

Internal

• bash
• Numbers and Arithmetic in bash
• hexdump

Overview

hexdump -n3 -e'/3 "52:54:00" 3/1 ":%02X"' /dev/random; echo ""

Options:

-n<number> Interpret only number bytes of the input.

-e'format-string'

Format String:

A format string contains any number of format units, separated by whitespaces.

A format unit contains up to three items: an iteration count, a byte count, and a format:

• The iteration count is optional. It is a positive integer that defaults to 1. Each format is applied iteration count times.
• The byte count is an optional positive integer that specifies the number of bytes to be interpreted by each iteration of the format.

... -e'1/2 "format"'

The format